The Invincible Six is a 1970 American-Iranian adventure film directed by Jean Negulesco and starring Stuart Whitman, Elke Sommer, Curd Jürgens, and Ian Ogilvy.

An adventurous American whom everybody calls Tex, and his partners, the mechanically savvy Mike and an Englishman named Ronald, are foiled in their bid to steal Tehran's precious jewels.

In the desert, they join up with three other criminals, an Iranian, an Italian, and a German, to plot another heist.

They have the good fortune of meeting Zari, the beautiful mistress of the infamous bandit Malik, who is after a valuable amulet.

Ronald is captured and tortured, Nazar is shot, and Zari is soon forced to decide if she wishes to continue on to wherever fate takes Tex next.